The Lexmark B241H00 Toner Cartridge in Black is a genuine OEM product designed for Lexmark printers, specifically the MS321-621 model. With a laser print technology, this toner cartridge is compatible with Lexmark and Advent printers. Made in the United States, this high-quality cartridge has a unit quantity of 1 and dimensions of 15.8in in length, 9in in height, and 7in in width. Ideal for professional printing needs, this Lexmark toner cartridge ensures crisp and clear black prints with every use.